Foeee bain



(No Model.)

F. BAIN.

ELECTRIC LAMP.

No. 283,186. Patented Au UNITED 'STATES PATENT' rricn.

'nonna BAIN, on UNION CITY, INDIANA, ASSIGNOR TO THE FISHER ELECTRIC COMPANY, OF SAME PLACE.

ELECTRIC LAMP.

SPECIFICATION formingpart of Letters Patent No. 283,156, dated August 14, 1883,

Application led July 26, 1882. (No model.) C I To all, who/l1, it may concern:

Beit known that I, Fonn BAIN, a citizen of the United States, and a resident of Union City, in the county of. Randolph and State of Indiana,- have invented certain new and useful Improvements in Electric Lamps, of which the following is a specification.

My invention relates to an improvement in electric lights; and it consists in the novel combination of devices hereinafter described, and illustrated in the accompanying drawings, in which- Figure l is an elevation representing my improvement as applied to a double lamp. Fig. 2 is a central vertical section of one of the supporting-sleeves. Fig. 3 isa transverse section of Fig. 2,with` the magnet-coils and adjustable portion of the core removed. Fig. 4 is an elevation of my improved spring-clutch device.

A A represent the cross-heads of the frame of the lamp.

B B represent the side rods, which are in sulated from the head A. v

C represents the supporting-tube, made of brass or other diamagnetic material.

c represents a cross-head for supporting the upper end of the sleeve C.

D represents amagnet-coil of low resistance placed in the prime circuit audwound upon j the diamagnetic sleeve C.

D represents a'hollow soft-iron core; d, a'

secondary hollow core.

E E represent secondary coils of high resistance placed inside 'of the axial coresD/d.-

e represents adjustingscrews attachedto the core (l, and provided with nuts on their upper ends to adjust the core d vertically within the sleeve C.A

The core D and its contained coil E are suspended within the sleeve C, so as to move freely upv and down to control the movement of the carbon. This movement is limited by means of an arm, a, attached to the magnet-core D, and. a screw, a', which passes through .'a slot, b, inthe supporting-sleeve C. This slot b is of sufcient length to allow ofthe proper movement of the'gravitating core D. The limit' ofV movement is adj usted by the screw b and stop plate b2.

The wires forming the coil D and the wires formino` the interior coils E E are so wound relatively to each other that the coils E E have a magnetic effect upon core D in opposition to the magnetic eifect of the coil D. The coils E E are preferably wound of one wire and in the same direction, the terminals S and R being connected in line, as shown in Fig. 2, the terminals of coil E being connected tok coil E, so as to form a compound coil, one being stationary and the other movable with its core D.

F represents the carbon-tube. It is supported in avertical position in the disk-guides F. carbon-holder is fully shown in Letters Patent No. 243,749, granted L. G. Wooley, July 5, 1881, upon which my invention is an improvement. The upper end of tubeV F is grooved to form a slot, j'.

The construction and arrangement of the` G repretents a iinger pivoted to the sleeve 7o Cbetween the disks F F, so as to secure an electric connection between the sleeve C and the carbon-holder F.

Y g represents a springfor keeping the parts in contact.

g represents a pin for removing the contact and allowing the rod F to be removed. When the stop f. descends to the finger G, the finger will drop into the groove and prevent the rod from dropping out.

II represents a clutch-rod, attached to the magnet-core D, and passing down, preferably, to a point between the disks F F, to which is attached a clutch-brake, I, pivotedito the frame I, which is suspended upon the rod. K K represent the tripping-disk, which acts as a stop to the descent of the frame I', which throws or trips the clutch I. Rod K is made adjustable by means of the screw 71 as shown in Fig. 2. Y

The parts F, H, K, K, I, and I are constructed susbtantially as described'in hereinbefore-said VVooleyv patent,but I have improved the same by applying the tension-spring L to the rod K,

as shown in Fig. 4, whereby I obtain a more accurate means of controlling the operation of the clutch under the action of the magnet. The spring L has abearing at its top against a collar attached to the shaft K, and the lower end bears upon the top of the pivoted clutch I, Ioo

the tension oi' the spring tending to retain the clutch in the position shown in Fig. 4, in which position the lower end of the clutch acts to hold the carbon-holder against vertical movements. I also apply dash-pots to the axial movable core D', as shown in Fig.`2.

ZZrepresent the dash-pots. They are pivoted to removable segments met the sleeve C, m' representing catch-lugs cast or attached to the segments on.

fi i represent screws i'or securing segments mv in position.

rIlhe dash-pot rods J J are` pivoted to lugs on the core D'. \Vhen it is desired to fill or remove the dash-pots, vthe screws zi are removed, the segments m are lifted up to remove the catches m', when the pivoted dash-rods will swing outward and allow the removal of the pots.

It is exceedingly important to have the clutch-brake I act positively and have a spring, allowing a delicate adjustment of the tension.

The screw 7L upon the rod K may be turned to depress the rod and the disk K', and thereby compress the spring L and regulate the throw oi' the clutch I. The arrangement of this adjusting mechanism oi' the clutch and of the rcmovable dash-pot Z are important improvements upon the said Vooley patent, securing a much more positive and accurate movement of the armature.

rIhe operation oi'my lamp is as follows: I? represents the positive conducting-wire attached to the binding-post O. At the foot of the post 0 the circuit divides, the larger wire, I), connecting with the larger coils, D D, which are electrically connected by wire g thence through the sleeve C C, and through fingers G, to the rods F, and thence to the earbons; thence to cross-arm A', side rods, B, and negative wire N, passing up through sleeve @,and out through insulated sleeve It, to conductor o' and binding-post O'. rIhe lesser portion of the current is conducted by a iine iieXible insulated wire, p, at the i'oot oi' binding-post O, into the interior of the lamp, connecting with one end ofthe wire of the lesser coil, the other opposite end of the said coil E being connected to the binding-post O' by a similar wire, s.

The adjustment of the carbons is attained as lollows: \Vhen two sets of carbons are grouped, as shown in Fig. l, the cai-bons are adjusted so that their points will rest one upon the other, and the plate b, adjusted so as to allow the cai-bons to rise a sufficient distance to form the are, and the axial core D', with its contained coil E, being below the center of the magnet D, will be raised and lift the earbons, when the are will be formed between whichever set ol the carbons is adjusted, so as to have the lesser resistance. As the earbon is raised a portion of the current passes through the shunt coil or coils, which amount increases as the are increases, and the resistance oi the lamp'fcircuit consequently becomes greater. When the are reaches a predetermined p oint, the relative resistances ofthe two circuits become such that the opposing magnetic effects of D and E upon D become equal, whereupon gravity acts and D and its attached carbon-holder falls-a sudden fall,

j ar, or shock being prevented by the action el" the dash-pots referred to. The carbon falls to its new position, and the sequence of operations is repeated until the carbon is consumed or the current switched away from the lamp.

Any suitable devices may be used with this construction of lamps to switch the current from one carbon to the other in double lamps, upon one carbon being consumed, or when from other causes it is desired to throw one out and the other in, and any suitable known circuiting arrangements for series or for multiple-are systems may be used with the lamps so as to use them in either system.

l. The combination, in an electric-arclamp, oi a movable carrier oi' the carbon to be fed, a compound magnet having a coil of low resistance wound 011 a diamagnetic sleeve, and having inside of said sleeve a hollow axial core, inside oi" which is a divided lesser coil of high resistance, one portion of which is wound on the vertiez'illy-moving core D', and the other wound on a stationary core, d, and so combined that the magnetic action of the coils adjusts the axial core D' in a vertical direction, and regulates the feed'o't' the movable carbon-holders, substantially as described.

2. The combination, in an electric-arclamp, of a movable carrier oi' the carbon to be fed, a compound magnet having a coil. ot' low resistance wound on a dianiagnetie sleeve, and having inside of said sleeve a hollow axial core, inside of which is a coil ot' high resistance wound on a rising-and-ialling core actuating a clutch-rod and clutch, substantially as described.

3. In combination with the vertically-moi ing core D', the adjustingarm r, screw a', and sleeve C, having the slot b, adjustingscrew b', and stop-plate b", :for adjusting and limiting the movement of the said core, substantially as described.

4. In an electric-arc lamp, the combination of the dash-pots Z Z upon the detachable segments m, and the vertically-moving axial core, substantially as herein set forth.

5. In combination with the pivoted rod H and adjusting clutch-frame I', stop li', and suspending-rod K, the tension-sprin L, coiled upon rod K, substantially as herein set forth.

In testimony whereof I have hereunto set my hand in the presence oi" two subscribing witnesses. i

i ron 1in BAIN.

XVitnesses:

JNO. E. J'oNns, ANDREWE. Seo'r'r.

TOO

ITO 

